X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;ds=sidebyside;f=datapath%2Fdatapath.c;h=1ea5d1e9a7c2d850cf989b34c6a5f3e7b53d25ac;hb=6161d3fd928edf7016abae60f549a135a2f83f09;hp=c43adf9fa6d492871eedc33e8cb755822980c088;hpb=dc5f3fefa100de35701368eff559f9e9ba1eb2eb;p=openvswitch

diff --git a/datapath/datapath.c b/datapath/datapath.c
index c43adf9f..1ea5d1e9 100644
--- a/datapath/datapath.c
+++ b/datapath/datapath.c
@@ -437,17 +437,28 @@ static int queue_userspace_packet(int dp_ifindex, struct sk_buff *skb,
 				  const struct dp_upcall_info *upcall_info)
 {
 	struct ovs_header *upcall;
+	struct sk_buff *nskb = NULL;
 	struct sk_buff *user_skb; /* to be queued to userspace */
 	struct nlattr *nla;
 	unsigned int len;
 	int err;
 
-	err = vlan_deaccel_tag(skb);
-	if (unlikely(err))
-		return err;
+	if (vlan_tx_tag_present(skb)) {
+		nskb = skb_clone(skb, GFP_ATOMIC);
+		if (!nskb)
+			return -ENOMEM;
+		
+		err = vlan_deaccel_tag(nskb);
+		if (err)
+			return err;
 
-	if (nla_attr_size(skb->len) > USHRT_MAX)
-		return -EFBIG;
+		skb = nskb;
+	}
+
+	if (nla_attr_size(skb->len) > USHRT_MAX) {
+		err = -EFBIG;
+		goto out;
+	}
 
 	len = sizeof(struct ovs_header);
 	len += nla_total_size(skb->len);
@@ -456,8 +467,10 @@ static int queue_userspace_packet(int dp_ifindex, struct sk_buff *skb,
 		len += nla_total_size(8);
 
 	user_skb = genlmsg_new(len, GFP_ATOMIC);
-	if (!user_skb)
-		return -ENOMEM;
+	if (!user_skb) {
+		err = -ENOMEM;
+		goto out;
+	}
 
 	upcall = genlmsg_put(user_skb, 0, 0, &dp_packet_genl_family,
 			     0, upcall_info->cmd);
@@ -475,7 +488,11 @@ static int queue_userspace_packet(int dp_ifindex, struct sk_buff *skb,
 
 	skb_copy_and_csum_dev(skb, nla_data(nla));
 
-	return genlmsg_unicast(&init_net, user_skb, upcall_info->pid);
+	err = genlmsg_unicast(&init_net, user_skb, upcall_info->pid);
+
+out:
+	kfree_skb(nskb);
+	return err;
 }
 
 /* Called with genl_mutex. */
@@ -1261,7 +1278,7 @@ static int ovs_dp_cmd_fill_info(struct datapath *dp, struct sk_buff *skb,
 				u32 pid, u32 seq, u32 flags, u8 cmd)
 {
 	struct ovs_header *ovs_header;
-	struct nlattr *nla;
+	struct ovs_dp_stats dp_stats;
 	int err;
 
 	ovs_header = genlmsg_put(skb, pid, seq, &dp_datapath_genl_family,
@@ -1277,10 +1294,8 @@ static int ovs_dp_cmd_fill_info(struct datapath *dp, struct sk_buff *skb,
 	if (err)
 		goto nla_put_failure;
 
-	nla = nla_reserve(skb, OVS_DP_ATTR_STATS, sizeof(struct ovs_dp_stats));
-	if (!nla)
-		goto nla_put_failure;
-	get_dp_stats(dp, nla_data(nla));
+	get_dp_stats(dp, &dp_stats);
+	NLA_PUT(skb, OVS_DP_ATTR_STATS, sizeof(struct ovs_dp_stats), &dp_stats);
 
 	return genlmsg_end(skb, ovs_header);
 
@@ -1604,7 +1619,7 @@ static int ovs_vport_cmd_fill_info(struct vport *vport, struct sk_buff *skb,
 				   u32 pid, u32 seq, u32 flags, u8 cmd)
 {
 	struct ovs_header *ovs_header;
-	struct nlattr *nla;
+	struct ovs_vport_stats vport_stats;
 	int err;
 
 	ovs_header = genlmsg_put(skb, pid, seq, &dp_vport_genl_family,
@@ -1619,12 +1634,9 @@ static int ovs_vport_cmd_fill_info(struct vport *vport, struct sk_buff *skb,
 	NLA_PUT_STRING(skb, OVS_VPORT_ATTR_NAME, vport->ops->get_name(vport));
 	NLA_PUT_U32(skb, OVS_VPORT_ATTR_UPCALL_PID, vport->upcall_pid);
 
-	nla = nla_reserve(skb, OVS_VPORT_ATTR_STATS,
-			  sizeof(struct ovs_vport_stats));
-	if (!nla)
-		goto nla_put_failure;
-
-	vport_get_stats(vport, nla_data(nla));
+	vport_get_stats(vport, &vport_stats);
+	NLA_PUT(skb, OVS_VPORT_ATTR_STATS, sizeof(struct ovs_vport_stats),
+		&vport_stats);
 
 	NLA_PUT(skb, OVS_VPORT_ATTR_ADDRESS, ETH_ALEN,
 		vport->ops->get_addr(vport));